Calibration system for a thermal ink-jet printer

Details Calibration system for a thermal ink-jet printer Calibration system for a thermal ink-jet printer

1994-02-18

1996-05-21

Hartary, Joseph W.

Incremental printing of symbolic information

Ink jet

Controller

B41J 29393

Patent

active

055194192

ABSTRACT:
A thermal ink-jet printhead adapted to emit ink onto a print sheet is automatically adjusted. The printhead is caused to emit ink onto a sheet in a manner consistent with an image of a first density, and then substantially immediately caused to emit ink in the form of a first test pattern on the sheet. The density of the first test pattern on the sheet is measured. The printhead is caused to emit ink onto the sheet in a manner consistent with an image of a second density, and then substantially immediately caused to emit ink in the form of a second test pattern on the sheet. The density of the second test pattern on the sheet is measured. The densities of the first test pattern and the second test pattern are correlated with a function relating a characteristic of an image printed with the printhead to a temperature of the printhead.

REFERENCES:
patent: 5038208 (1991-08-01), Ichikawa et al.
patent: 5066961 (1991-11-01), Yamashita
patent: 5189521 (1993-02-01), Ohtsubo et al.
patent: 5223853 (1993-06-01), Wysocki et al.
patent: 5387976 (1995-02-01), Lesniak

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